feat: Try to add cachix support in github action

.github/workflows/test.yml

@@ -0,0 +1,29 @@
+name: "Test Cachix"
+on:
+  workflow_dispatch:
+  pull_request:
+    branches:
+      - dev
+  push:
+    branches:
+      - dev
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        hostname: [Tytonidae Akun Cape]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: cachix/install-nix-action@v25
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+          extra_nix_config: |
+            trusted-public-keys = youthlic.cachix.org-1:zkUZ/ZGGF5fZxvg5WO3K8XAsUAPFmQKWbnAFb3W5x+Y= cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= niri.cachix.org-1:Wv0OmO7PsuocRKzfDoJ3mulSl7Z6oezYhGhR+3W2964= nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs= chaotic-nyx.cachix.org-1:HfnXSw4pj95iI/n17rIDy40agHj12WfF+Gqk6SonIT8= nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs=
+            substituters = https://youthlic.cachix.org/ https://niri.cachix.org/ https://nix-community.cachix.org/ https://chaotic-nyx.cachix.org/ https://cache.nixos.org/
+      - uses: cachix/cachix-action@v14
+        with:
+          name: youthlic
+          authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
+      - run: nix build .#nixosConfigurations.${{ matrix.hostname }}.config.system.build.toplevel
+      - run: nix run nixpkgs#toybox -- echo OK